Driving state monitoring method, device and system
A driving state, driver's technology, applied in psychological devices, diagnostic recording/measurement, eye testing equipment, etc., can solve problems such as poor practicability and low monitoring accuracy
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Embodiment 1
[0042] The embodiment of the present invention provides a method of monitoring a driving state, such as figure 1 As shown, the above monitoring method includes:
[0043] Step S102, based on the preset white light stimulation intensity and the preset white light stimulation time, the driver's pupil image is acquired by the infrared imaging unit.
[0044] Specifically, the present application is provided with a special set of physical systems to perform the above monitoring method. First, the physical system align the driver's pupil, and the pupil is sent to the pupil, the strength of the white light and the duration of white light are pre-set (ie, the preset white light stimulation intensity and preset white light stimulation) Time), general white stimulation time is a few milliseconds. In a certain period of time after starting white light stimulation to the end of the stimulus, the infrared camera unit takes a pupil image of the pupil. The driver's pupil is generally stimulated, ...
Embodiment 2
[0053] The embodiment of the present invention provides another method of monitoring another driving state, such as figure 2 As shown, the above monitoring method includes:
[0054] Step S202, set the initial parameters in advance.
[0055] Specifically, the initial parameters include: background light brightness, white light stimulation intensity, white light stimulation time, acquisition time (also known as total test time), acquisition frequency and light reflection parameter change threshold; light reflection parameter change threshold includes minimum pupil size change threshold, The percentage of pupil changes threshold, the average shrinkage speed change threshold and the maximum shrinkage speed change threshold. The background light brightness refers to the brightness of the relatively weak light in the entire detection process. The general test time generally includes the entire process of pupil recovery from the beginning of the stimulation to the end of the stimulation,...
Embodiment 3
[0102] The embodiment of the present invention provides a monitoring device for driving a state, such as Figure 9 As shown, the above device includes an infrared imaging module, an image processing module, a reflective parameter calculation module, and a comparison module.
[0103] The infrared camera module 91 is configured to collect the driver's pupil image multiple times by the infrared camera unit based on the preset white light stimulation intensity and the preset white light stimulation time.
[0104] The image processing module 92 is configured to determine the pupil size of the driver according to the pupil image.
[0105] The reflection parameter calculation module 93 is configured to determine the light reflection parameter change value of the driver's pupil according to the pupil size.
[0106] The comparison module 94 determines the driving state of the driver based on the changed threshold of the preset light reflection parameter value and the preset light reflection...
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Abstract
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